Beam bearing for deep-well pumps



Jan. 24, 1928.

v 1,657,178 J. P. RATIGAN BEAM BEARING FOR DEEP WELL PUMPS Filed May 5, 1926 nvVEN oig Jmes PPaZW Q1724 GWQXYM TORNEY Patentedlan. 24, 1928.'

UNITED STATES JAMES P. RATIG-AN, F LOS ANGELES, CALIFORNIA.

PATENT OFFICE.

BEAM BEARING FOB DEEP-WELL PUMPS.

Application filed May 3,

This invention relates to an antifriction, greaseless fulcrum means for tilting or walking beam levers.

. In many types of machines and apparatus, and particularly in deep-well beam-pump equipment very heavy walking beams are employed. These are usually mounted to oscillate in vertical paths so that their load is taken by trunnion shafts and boxes having horizontal axes, and usually the sweep of the beam is equally divided above and below the horizontal. Because of oscillation about the fixed axis of the bearing, it is clear that the ends of the beam move in true arcs. One end of the pump beam is connected to a polish rod and because of the angular ofthe'beam end there is, of

movement course, a, decided bending strain on the such as is the result of use of a simple rotating trunnion, axle or shaft device.

Further, an end I desire to accomplish is ready bodily shifting of the working beam in a direction lengthwise, either way, so. as to most effectually determine its setting in relation to other parts of the associated equipment: for instance, to bring its pump end into one or another position over the. line of the polish rod.

By the present invention such a longitudinal adjustment of the beam is had TibllOlli] loosening even a nut, orv adjustment, or change of any part, excepting the beam itself.

My present invention eliminates trunnions, shafts and axles and provides a device which in one given size, can be used for either light or heavyloads,and, further, is, in the one size, adaptable for use on differ entsize Samson post-s.

Withthe above, an object is to provide a lever having a mounting means affording a progressively changing fulcrum-line contact with a fixed mount whereby to Obtillll. an

1926. Serial NO. 108,461.

effective increase of length of power arm and a shortened end of load arm (in the lever) when the beam 1s on loadl1ft1ngstroke. My invention is to secure a maximum leverage of beam on the power arm againsta minimum arm on the load side at the moment of initiating load movement.

Another object is to provide against over throwing or accidental disn'iounting of. the beam from the post. i i

- Further objects and advantages will be made manifest in the ensuing specification of the herewith illustrated apparatus em bodying the present improvements; it being understood that modifications, variations and adaptations may be resorted to within the spirit and scope of the invention.

Figure 1 is a side elevation of an unhitched pump beam, showing the improved mount in side elevation.

Figilre 2 is a side elevation. of the equipmentyparts being broken away. v t

Figure 3 is a cross-section of the beam and its attached rocker; the post-and its beam support or saddle being in elevation.

Figure l is a bottom plan of the rocker. Figure 5 is a side elevation ofthe rocker. Figure 6 is a graphindicating by comparison the difference'in a rotating, constant axis bearing and the improved floating fulcrum bearing.

The invention is shown as adapted to a walkin pump beam B mounted. by the improved means, upon a support, for instance a Samson post 1 i The mounting means consists of a rocker part on the beam and a support or saddle part on the post. It is understood that these parts may be combined, in any suitable manner, respectively, with the beam and the post. The parts are here shown as heavy castings attached tothe beam and to the post. The rocker member 2 has a top face to be bolted against the bottomof the beam 13,01 otherwise suitably fastened. The bottom of the rocker has a wide sole 3 whose face is curved on in a true are (in edge view) though the curvature need not be limited to true are form. The sole is thus a portion of a cylinder ofrotation having a long radius as compared to the radius of a heel, part i of the rocker. The beam is preferably balanced when a vertical line passes through the center of the heel 4 and the lowest point of the heel surface (position Fig.2) when the beam is horizontal. Within the surface ot theheel and teeth 5.

Thesaddle consists of a heavy top plate 10, to set solidly onuthe post P, having up- .5 wardly projecting side cheeks ll flanking the side faces of the rockerbutnot snugly bearing thereon, so that no friction is set up when the rocker rocks, when in place on the upper face of the mounting plate 10. The I plate 110 hasupn ardly extending teeth 12 to mesh with teeth 5 of the rocker. These sets of'teethare mueh shorter than the width of thesole and heel of the rocker whiehlatter carries and transfers the Wholeload to the top plateIO. "The function of the teeth 5-12 is to form a means. to preventrelative ends==hitt of the'beam as to the plate. It is desired to eliminate all sliding friction between the roekerand the mount 10. The teeth 5 are 90 forinedby spaced valleys inthe sole 3 and side play of thebeam preventerbby the endsof the teeth 12 orhythe side cheeks 11 orby both as mayf be desired and determined. byconstruction.

The sidecheeks receivethe ends of a stout pin 14 passing'through the rocker body and the rocker or thefcheeks have ample opening to allow "of rollingaction of the beam Without restrictioirof the pm, which liorms a meanslor preventing thebeam from juniping oil thepbSt orirom being overthrown by accident. In the disclosed form the "cheekshavelarge pin apertures 15.

The saddle shown has strong side fianges 1G to embrace the post fl? and differently spaced pair ofboltholes 17-18 permit of application OfllJOl'ES 19felose up tothe sides of diiferent widthsotposts.

Thepin lei is'not a pivot for action of the beam, but simply a form of means to keep the beamon top of the'saddle.

Inoperation, the beam'restson a trans verseline of contact with the saddle and when the beam is, by any ineans, tilted this 4 line of contact" shifts along the plate 10. Since thebeain does not sliift-theettect is to shorten one end o'tthelever hamllengthjen the other. It" the sole 3 points toward "the pump-rod end A of the lever B,the power iendis increased as theJpump'end goesdown. Hence whenpower isapplied to pull upthe pump rod the power is applied through greater leverage tostart the load.

A further advantage of my trunnionless beam is that instead "or the beam end sweepingin anarc concentric to a constant axis (or trunnion) fthe rocker sole 3 takes a rolling action on the plateand thebean'rend A moves in aniuch flattened curtate eycloid 30 .patlnG (Fig. 6) "about thefioating fulcrum sole 3. This straightening er the beam sweep is especially helpful during the lower half both the down stroke andtheup stroke, in which the 'polishrod ot the pump is least extended from its stuifing box and sole is a series of transverse vided With a plane faced rocker part bearihg has not the give} or flexibility it has-in its upper hall or strokes (up and down).

Therefore While I have gained by elimination otlrietion rotation (of trunnion) I also gain in the several respects above set out.

It will be seen that the beam has a fair degree of tree floating movement on its saddle which allows it to aceomn'iodate it to strains and stresses without a twisting re-- sult as-oecurs in rock-shaft bearings. Tllhii-i freedom avoids friction in bearing Suitable guy Wirebails 2t may be hung on thebolts 1S) tohrace the post 1.

The advantage of the short radiusheel i isthat as the power arm swingsdruvn its length is not n'laterially SllOl'iTOIN-Btl as i would be if the heel were oi" the same ilu are of the sole 3. g The slots 15 are so proportioned that the beam B, with its attached rocltoril, may be bodily shifted endwise to bring thepunu end of the beam into the best working position over the line of pump polished rtit Thisis done withoutany adjustment hi the rocker 2 as to the beam itself and is provided for by relative adjustment otthe rocker teeth 5 along the fixedrack 12 otthe saddle.

hat is claimedisz l. A; Samson post for deep well pumps having on its top end a plane uninterrupted top load surface, anda Walking beam having a rocker portion presenting a longitudinally curved, smooth rolling tread face meeting the said surface in broad, transverse rolling-line contact; whereby to eliminate point contact of theiaee. and the surface under load and to obtain long wear life of the meeting faces andside cheeks limiting side playot' the rocker.

2. A Samson post for beam pumps protop bearing plate, and a walking beam having a broad, (mrved and rolling on the said plat i along hing lines of contact; said rocker part having transverse, mitidially spaced, rack teeth, and said platehaving upstanding, intermediatcly disposed teeth to loosely mesh in the raelcieeth and prevent undue end shift otthe beam While Working.

3. A Samson post "for pumps provided with a topbearing plate, and a walking beam having abroad, curved faced rucrlter part rolling along the bearing plate; said beam rocker part and said plate lniiving loosely meshing teeth means toprevent creep of the beam, and said teeth meansincluding mutual racks shiftable relatively oneon the other to provide an effective change of orbits tor the ends of the beam. i

an Samson post havingon its top a bearing plate presenting a smooth load area, and a walking beam having a rocker portion presentingsmooth, merging heel and sole 1 fit) tread face rolling on transverse lines along the said plate area, the heel being sharply curved back from the sole to effect a ditferential action as the beam rolls from the flatter sole.

5; The combination, in a deep Well pump, of a Samson post having a plane-faced top plate With upstanding side cheeks and downwardly extending flanges means passing through ,the flanges to secure the plate in place on the post, a Walking beam disposed above the post and having a rocker, loosely fitting between the cheeks, having a curved rolling face resting upon the top plate and a retaining pin passing from cheek to cheek and through the rocker. v

The combination, in a deep Well pump, of a Samson post having a plane-faced top plate, side cheeks extending up from the plate, means for securing the plate in position on the post, a Walking beam havlng a rocker With a curved face rolling on the top plate, said beam being bodily adjustable to operate at different positions on the plate to regulate the line of lift on an attached polish rod, and relatively shiftable rack means to loosely retain the beam in any of its Working positions.

7. A cradle for a pump walking beam,

consisting of a bed part having a seat to :2 rest upon the head of a Samson post and having upstanding side cheeks, a rocker part attachable to the bottom of a Walking beam and loosely fittingbetween the side cheeks and having a smooth rolling face bearing on the said bed part; the mutual parts presenting longitudinally uninterrupted load zones of rolling contact, and a key pin passmg through the rocker part and into the bed cheeks to prevent overthrow of the mounted beam.

JAMES P. RATIGAN. 

